8-8
A91F3TR
[ Video Signal Section ]
No
Is the "L" pulse sent out Pin(1) terminal of remote
control receiver (RS102) when the infrared remote
control is activated?
Check the line between Pin(1) terminal of remote
control receiver(RS102) and Pin(25) of CN301,
and service it if defective.
Yes
Is the "L" pulse supplied to Pin(25) of CN301?
Yes
Is 3.3V voltage supplied to Pin(2) terminal of the
remote control receiver (RS102)?
No
FLOW CHART NO.2
Operation is possible from the remote control unit.
Check AL+3.3V line and service it if defective.
No
Replace the remote control receiver(RS102)
or the remote control unit.
Yes
Replace Digital Main CBA Unit.
When pressing each switches (SW101A, SW103A~
SW107A) do the voltage of Pin(29) of CN302 and
Pin(2) of CN303 increase?
Yes
The key operation is not functioning.
FLOW CHART NO.1 [LC320SLX, 32MF339B/F7, LC320SSX, LC320EMXF, LC321SSX, 32MF369B/F7]
Are the contact point and installation state of the key
switches (SW101A, SW103A~SW107A) normal?
Re-install the switches (SW101A, SW103A~SW107A)
correctly or replace the poor switch.
Check the switches (SW101A, SW103A~SW107A)
and their periphery, and service it if defective.
Yes
Replace Digital Main CBA Unit.
No
No
When pressing each switches (SW101B, SW103B~
SW107B) do the voltage of Pin(29) of CN302 and
Pin(2) of CN303 increase?
Yes
The key operation is not functioning.
FLOW CHART NO.1 [LC320EMX]
Are the contact point and installation state of the key
switches (SW101B, SW103B~SW107B) normal?
Re-install the switches (SW101B, SW103B~SW107B)
correctly or replace the poor switch.
Check the switches (SW101B, SW103B~SW107B)
and their periphery, and service it if defective.
Yes
Replace Digital Main CBA Unit.
No
No
No operation is possible from the remote control unit.
Picture does not appear normally.(Video input)
FLOW CHART NO.3
Are the video signal inputted to Pin(4) of CN302?
Yes
Check the line between Pin(4) of CN302 and
JK752, and service it if defective.
No
Replace Digital Main CBA Unit or LCD Module
Assembly.
Summary of Contents for 32MF339B/F7
Page 63: ...10 8 A91FSSCM2 Power Supply 2 4 Schematic Diagram LC321SSX 32MF369B F7 ...
Page 64: ...10 9 A91FSSCM3 Power Supply 3 4 Jack Schematic Diagram LC321SSX 32MF369B F7 ...
Page 65: ...10 10 A91FSSCM4 Power Supply 4 4 Schematic Diagram LC321SSX 32MF369B F7 ...
Page 68: ...10 13 A91F3SCF Function Schematic Diagram LC320SLX 32MF339B F7 LC320SSX LC320EMX LC320EMXF ...
Page 69: ...10 14 A91FSSCF Function Schematic Diagram LC321SSX 32MF369B F7 ...
Page 71: ...10 16 A91FSSCIR IR Sensor Junction Schematic Diagram LC321SSX 32MF369B F7 ...